This is a classic question, which deserves two answers...

First, you can find out details on how a member increases rank at this thread: https://bitcointalk.org/index.php?topic=178608.0. Which was found in the thread stickied at the top of this Beginner's board called "Newbies Read Before Posting".

Second, there's a lot of answers available in easy to find places. I'm a Newbie too and I've found out so much already without having to post simple questions. Before you post a question or make a new thread you should do a search to see if the information you seek is already easily available.